Finding the Fourth Proportional to 278,100.20, 416,900.82 and 100,565.48

Step by Step Solution

1. Step 1: Write the proportion equation
   278,100.20 : 416,900.82 = 100,565.48 : x
2. Step 2: Convert to fraction form
   278,100.20/416,900.82 = 100,565.48/x
3. Step 3: Cross multiply
   278,100.20x = 416,900.82 × 100,565.48
4. Step 4: Simplify right side
   278,100.20x = 41,925,831,075.69
5. Step 5: Solve for x
   x = 41,925,831,075.69/278,100.20
6. Step 6: Final answer
   x = 150,758.00